Cut-out.



No. 845,236. PATENTED FEB. 26, 1907.

' E. M. HEWLETT & G. H. HILL.

GUT-OUT.

APPLICATION FILED MAY 2,1904.

I 2 SHEETS-SHEET 1;

Fig.2

. Inventors:

Witnesses: Z W Edward Mllewlett- V 7 Charles I-I.Hi|l.

No. 845,236. PATENTED FEB. 26, 1907.

I Witnesses: b

E. M. HEWLETT & G. H. HILL.

GUT-OUT.

APPLIOATION FILED MAY 2,1904.

' 2 snnn'rs-snnn'r 2.

Inventors;

- Edward MHewl ett.

' Charles l-l.|li|l.'

M WM mg is a specification.

I ticularly adapted for announced, and a means To all 107mm trim/(1, concern:

'means being so arranged and constructe that it will be released automatically upon insulating-base in suc position t at the EDWARD M. HEWLETT AND CHARLES H. HILL, OF SCHENECTADY, NEW

YORK, ASSIGNORS TO GENERAL ELECTRIC COMPANY, A- CORPORATION OF NEW.XOBK.

Specification of Be it known that we, EDWARD M. HEW- LETT and CHARLES H. HILL, citizens of the United States, residing at Schenectad county of Schenectady, State of New Yorli, have invented certain new and useful Imrovements in Cut-Outs, of which the follow- The present invention relates to mechan-' ical cut-out devices for making and breaking electric circuits, andhasfor its object the provision of a device of this character paruse in connection with suitable signal means for audibly or visually indicatin the condition of some remote orconceale apparatus or parts thereof.

In carrying out our invention we ,provide a suitable base of insulating material having. stationaryelectric contacts fixed thereon, a movable contact membernormally biased to move'into engagement with the stationary contacts and haying a projecting part adapt- Application filed Ma 2,1904. semi No. aoaeaa.

cuT-ouT.

Letters Patent.

with the movable contact in locked position. Fig. 3 is alongitudinal section thereof with the movable contact in extreme inner position. ig. 4 is a rear end elevation. Fig. 5

is a transverse section taken on line 5 5 of Fig. 3, and Fig. 6 is a diagrammatic representation of a system of connections.

The base 1 of our cut-out device 1s made of wood or other insulating material with a lar e cylindrical rear section 2 and a smaller c hndrical forward section 3. The rear secmen is provided with a diametrical slot 4:, which extends about three-fourths of its length, and fan-shaped recesses in opposite directions from the sides of the slot 4, whereby ledgesfi are provided in a plane transverse to the axis of the base, and in the ends of the prongs 7 and 8 of the base thus formed a cylindrical recess or chamber 9 is provided with its end Wall 10 located Patented Feb. 26,1907.

5, extending at about one-third "thelength of the large section 2. The small section 3 is provided ed to be engaged and held in inoperative positionby some movable part of the apparatus the change ofcondition of'which is to be for locking by hand the movable member in inoperative position in forder that the circuit through the signal device may be interrupted in case it becomes necessary or desirable to allow the apparatus to remain in abnormal condition, the lockin restoration of the apparatus to its normal condition. Moreover, in order to adapt our cut-out device to control an auxiliary circuit in addition to the signal-circuit we provide a second set of stationa contacts u ,on the movable contact Will engage therewith when in the opposite extreme position from'that in which it operates to. .close the signal-circuit.

' For a more complete understanding of our ing detailed specification and the accompanying drawings, forming a part thereof, in w c Figure 1 .is a side elevation of a switchl board *and circuit-breaker, having mounted in operative relation therewith a cut out device embodyin one form of our invention. Fig. 2 is a side e with a concentric cylindrical chamber 11, which connects-at its inner end, bymeans of ,a small aperture 12, with the "bottom of the transverse slot e. To the outside of the pronged ends of the base are secured stationary contacts 13 and -14, each consisting of a stri 15 of phosphorbronze or other s ring metal? with its free end of the base and turned out bearingshoe 16,

bentover the en 'wardly and provided with a.

While the other end is secured to the base by 7 and carries a binding-screw 18, by

a screw 1 which a conductor-wire of the auxiliary o1rcuit may be connected thereto. To the sides ofsthe large section 2, near the end of the slot 4, are secured a second pair of stationary contacts l9 and 20, each consisting of a sheetnretal bracket 21, secured in ashallow channelformed in the side of the small base-section 3 by a screw 22 and having extending therefrom at its side a projecting arm '23, which is bent sidewise and provi screw 24 and having its free end bent over and inwardly to form a spring contact-surface 25.

The movable switch member consists of a shaft 26, which extends axially through the base and. carries at its're'ar end a fiat metallic head 27, adapted to normally rest in slot 4,

evation of the cut-out device with its ed es in en 'a ement with contacts ded with a bindingv 19 and 20, and on the outer end of the head 27 is closely mounted an insulating-disk 28, having a metallic peripheral band 29, adapted to engage the contacts 13 and 14. The forward end of the-shaft 26 is secured to an insulating-button 30, and between the inner end of. the button and the rear wall of the cylindrical chamber 11 is a helical spring 31,"

' which has its ends bent out parallel to its axis and entered into holes in the respective parts,

so that the movable switch member'is held under spring tension both longitudinally and rotarily.

clamped into position, as

The ledges 6 at the ends of the fan-shaped recesses 5 are provided'with small shouldered projections or pins 32, behind which the shoulders 33 of the contact head 27 may becaught after a partial rotation of'the head against the rotary tension of the spring 31.. The front end of the basel is provided with an external screw-thread for the reception of a nut 34, whereby the cut-out device may be indicated in Fig. 1, with the push-button in operative relation to the apparatus whose change of condition is to be announced.

This apparatus, as shown, consists of a well-known form of circuit-breaker, having main stationary contacts 36, mounted upon an insulating-slab 37, and a frame 38, upon which are fulcrumed the operating-lever 39 and the several movable .partsof the switch, which carry themain movable contact and the shunt-contact 41. When the circuit-breakeris moved into closed position,

I as shown in Fig. 1, aprojecting pin 42, carried by the lever of the shunt-contact member 41,

' forces the movable member of the cut-out 'ing electrically the contacts normal device into its extreme rear position, connect- 13 and :14, Which,as indicated ata in Fig. 6, maybe connected in a shunt-circuit with a trip-'coil-b of thecircuit-breaker, sothat it may be actu-. ated "from some remote point by closing a hand-switch c. As soon as the circuit breaker operates toopen the main circuitthe'pushbutton 30 of. the cut-out is released. and moves forward under the stress of its'spring31 until.

the'head 27 engagesthe stationary contacts 19 20. This-completes the circuit d, Which may be provided in connection with a bell or 'annun'ciator e. This'circuit will continue excited until "thecircuit-breaker is returned to osition or until the push button 30 is force into intermediate position and given. a partial rotation, so as to carry the shoulders 33 of the head 27 back of the pins 32 to lock it in inoperative position; When the circuitbreaker is again returned to closed position,

the head 27 is automatically forced'backward out of locked position and rotated under the stress of the spring 31 to its normal position,

\Ve do not desire to restrict ourselves to the particular form or arrangement of parts in inoperative position when angularly rotated. r v

2.. The combination with a base having a 'longitudinalslot extending therethrough and recesses extending from the sides of the slot, of stationary contacts mounted on saidbase at opposite endsof said slot, a movable contact located in said slot and having biasing means tending to'move it into-engagement I with said stationary-contacts, and means located in said recesses for locking said movable contact in inoperative position.

3. The combination with a base having a longitudinal slot and transverse recesses, of stationary contacts mounted thereon at opposite ends of said slot, a movable contact having biasing means tending to move it longitudinally 'into en agement With said stationary contacts an rotarily'parallel to 1 the sides of said slot, and shouldered projections located:,in said recesses and adapted to engage said movablelatter is partially rotated.

contact when the e combinationwith a base having a slot extending into one end and transverse recesses extending from opposite sides of said slot with end led es out of'the plane of the bottom of said s 0t, of stationary contacts- -mounted on said base at the-ends of said slot, a movable contact, means tending to move said movable contact longitudinally into engagement with said stationary con-' 'tacts .and rotarily into parallelism with the-- sides of said slot, and shouldered projections extending froms'aid end ledges and adapted lbs to engage ,said movable contact when the latter is partially rotated.

'5. The'combination with a base, of two" setsof stationary contacts mounted thereoncontact adapted to engage the respective pairs of stationar contacts at opposite ends of its travel, biasing means tending to move said movable contact into engagement with in different-plane's, a longitudinally-movable, V

one set of stationary contacts, and means-v for locking said movable contact in intermediate inoperative position. I

6. The combination with a base, of two sets of stationary contacts mounted thereon in different planes, a longitudinallyfmovable contact, biasing means tending to move it into engagement with one'set of contacts, and means located between the planes of the 1 contact in inoperative position, said parts stationary contacts for locking the movable b d h f 1 d our hands this 30th day of April, 1904.

ein so arran e t at a oroe ap 1e inone- '(lirec tion to sa ld movable contacl? will move gg g 5 it from engagement with one set of contacts I into engagement with the other set or from its locked position into engagement with the latter set of contacts. I

Witnesses:

BENJAMIN B. HULL, HELEN ORFORD.

In witness whereof we have hereunto set- 

